Automatic pistol.



N. PIEPERM AUTOMATIC PISTOL APPLIGATION TILED JAN. 6, 1908.

Patented Feb. 2, 1909.

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N. PIEPER. AUTOMATIC PISTOL. APPLICATION nun JAN. 6, 1908 Patented Feb. 2, 1909.'

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NICOLAS PIEPER, OF LIEGE, BELGIUM.

AUTOMATIC PISTOL.

Specification of Letters Patent.

Patented Feb. 2, 1909.

Application filed January 6, 1908. Serial No. 409,578

To all whom it may concern:

Be it known thatv I, NICOLAS. PIEPER, a subject of the King of Belgium, residing at Liege, Belgium, have invented certain new and useful Improvements in Automatic Pistols; and I hereby declare the following to be a full, clear, and exact description of the same.

The present invention relates to an auto.- matic pistol having a fixed barrel and comprises improved fastening arrangements adapted to facilitate the dis-assembling and re-assembling of the various parts by hand. l/Vith this object the pistol is constructed of three distinct principal parts: the body, the barrel and the breech-casing. These two latter elements, the barrel and the breechcasing, are connected together and the whole can be placed in position upon, and connected to, the body, or can be detached from the latter by the simple operation of a locking key.

The accompanying drawings represent, by way of example, different forms of such a pistol.

Figure 1 is an elevation of the pistol with the front portion of the body partly in section. F ig. 2 shows the barrel, the breech bolt and the slide detached from the body. Fig. 3 is a transverse section on AA (Fig. 1). Fig. 4c is a transverse section on B-B (Fig. 2). Figs. 5, 6 and 7 are similar views to Fig. 1 showing different locking ar rangements. Fig. 8 shows, in part section, another type of pistol. Fig. 9 is a side elevation and Fig. 10 is a View of the whole of the detachable parts removed from the body.

In the various examples, the barrel and the breech-casing, and also the difierent parts which are carried by them, can be detachedin their entiretyfrom the fixed body by the simple operation of a key or other means of attachment, permitting of the detachment of said parts without the use of a tool.

The pistol represented consists essentially of a barrel a surmounted by the re-action spring, of which the rod is connected to the slide 1% of the bolt contained within the breech-casing c, of which the front wall comes against the barrel chamber.

The barrel a (Figs. 1 to 4) carries upon its lower side a projection 6 provided, upon its front face, with a semi-circular recess which engages, when the barrel a is in position upon thebody b, with a pin it or other equivalent stop carried by the latter.

At the rear, the barrel a carries a projection or hook f similar to the previous one, and which engages with a pin 70 also fixed to the body. This hook-part fextends down. wards and engages between the two ears Z with which the breech-chamber is provided at the front and on the underside, and which fit between the side walls of the body I). These ears Z can be connected to the hook part f by a pin or screw 9 which does not pass through the walls of the body b Fi 3 A? the rear, the casing c carries on its underside, a second hook-part or projection 9 through which passes the flattened pivot pin of a key p operated from the exterior by a lever or button 42. The circular recess in the hook-part g and in which the pin 29 is adapted to turn, is open at the front, so as to pennit the removal of the casing 0 when the key p occupies the position corresponding to the gap or recess (represented in broken lines in the drawing). The body I) is open at the rear at the point where the hook-part g is located.

'WVhen it is required to disassemble the pistol, that is to say, to remove from the body 6 the whole of the part represented in Fig. 2, it is sufficient to bring the key n-p into the opening position by turnin it in the direction of the arrow (Fig. l and then to draw the whole part ac slightly towards the rear so as to disengage the hookparts 6, f, g from the pins h, 76, p, and to raise it from the body. The assembling-is eflected in the reverse manner.

In the arrangement .shown in Fig. 5, the front locking part c of the barrel a is dis pensed with, while the flattened pin 39 of the locking key a is situated at the front of the body 6, so as to engage simultaneously with the rear part f of the barrel and with the ears Ziof the breech casing c. This latter carries at the rear a locking part or projection 9 provided with a semi-circular recess which engages with a pin carried by f jection Z, and consequently, the projection g the body 6 when the arm is assembled. The disassembling is effected by adjusting the key np into the opening position, represented in broken lines, and turning the whole part ac around the pin The arrangement represented in Fig. 6 is similar to that of Fig. 1; the middle pinris dispensed with however, while the recess in the projecting part 9 of the casing 0 is transferred to the underside. The disassembling is effected by turning the whole part a-c, after having moved the key 'n,79 into its opening position, around the pin 7L, which engages with the front locking part c of barrel a.

In the arrangement in Fig. 7 the disassembling of the parts ac is effected, in a similar manner, by turning same around the fixed pin it, which engages with the recess in the front locking part c of barrel a. The rear projection f of this latter is shortened, so that it only acts as an abutment. The breech-casing c is provided, on its side, with a front locking part Z engaging with a pin 70 carried by the body, and a rear engaging part 9 recessed similarly to the correspond ing part in Fig. 6, and through which passes, as before, the flattened pin p of a locking or assembling key a. T0 dismount the pistol, it is sufficient to give a half-turn to the key np in the direction of the arrow and to draw the whole part a0 slightly rearwards, which is permitted by the slight play or clearance in the recess of the part 57, so as to disengage the locking parts 6 and Z from the pins 7i and 7a. The upper part of the pistol can then be raised without any impediment;

In the forms shown in Figs. 8, 9 and 10, the breech casing c carries at the rear a locking part 9 provided with a semi-circular recess opening towards the rear and at the front a projecting part Z, against which comes the part f carried at the rear of the barrel. The said part f of the barrel is provided with a semi-circular recess, opening towards the front, and which engages with the flattened pin 7) (Fig. 8) of the key a, disposed laterally in the casing 72 (Fig. 9).

To put in place the combined parts cZ-c, represented separately in Fig. 10, the part 9 is engaged with the fixed pin h carried by the body 6, and the key 0?. taken into the position represented in dotted lines Fig. 9, which places the flattened pin p in a position which permits of the passage of the part By turning the key a a quarter of a turn to take it into the position shown in full lines, the pin p is engaged with the part f and thus the parts ac fixed to the body 5. The rotation of this pin 39 has also the effect of taking the engaging part f against the prointo engagement with the pin h. To disassemble the pistol the inverse operation is effected. It is obvious that other equivalent arrangements may be devised which permit of maintaining and fixing on the body of the arm the entire part represented separately in Figs. 2 and 10 and which it will be possible to apply to other types of appropriate pistols.

Having fully described my mvention, what i desire to claim and secure by Letters Patent is 1. The herein described pistol comprising a frame, a barrel and a breech casing, the barrel and breech casing being connected to be bodily separated from the frame and being connected therewith by a plurality of lugs or ears each adapted to engage a member of the frame when the parts are assembled, one of said frame members being rotatable and adapted in one position to lock the barrel and breech casing to the frame and when turned to another position to permit said parts to be readily disengaged from the frame.

2. The herein described pistol comprising a frame, a barrel and a breech casing, the barrel and breech casing being connected to be bodily separated from the frame and having connected therewith two lugs adapted to enter suitable spaces in the frame when the parts are assembled, a pin rigidly connected with the frame and adapted to be engaged by one of said lugs, a rotatable pin of polyg onal cross section mounted in the frame and adapted to engage the other of said lugs, and means for turning said pin to cause it to secure the barrel and breech casing to the frame or permit said parts to be detached from the frame.

3. The herein described pistol comprising a frame, a barrel and a breech casing, the barrel and breech casing being connected to be bodily separated from the frame and having connected therewith two lugs arranged at opposite ends of the breech casing and adapted to enter suitable spaces in the frame when the parts are assembled, a pin rigidly connected with the frame, and adapted to be engaged by one of said lugs, a rotatable pin of polygonal cross section mounted in the frame and adapted to engage the other of said lugs, and means for turning said pin to cause it to secure the barrel and breech casing to the frame or permit said parts to be detached from the frame.

i. The herein described pistol comprising a frame, a barrel and a breech casing, the barrel and breech casing being connected to be simultaneously bodily separated from the frame and adapted to be interlocked with the latter at a plurality of points when the parts are assembled, one of the interlocking In testimony whereof I affix my signature members being adjustable and adapted in in presence of tWo Witnesses.

one position to prevent disen 'a 'ement of the parts at any of said point? 5f connection NICOLAS PIEPER' 5 and when in another position permitting the Witnesses:

barrel and breech casing to be-freely de- A. PENDLETON CRUGER,

tached from the frame. J. GRoss. 

